contrib/gitdm: Add SYRMIA to the domain map

The company website lists QEMU amongst the things they work on so I
assume these are corporate contributions.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Cc: Milica Lazarevic <milica.lazarevic@syrmia.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230315174331.2959-28-alex.bennee@linaro.org>

contrib/gitdm/domain-map

@@ -39,6 +39,7 @@ siemens.com     Siemens
 sifive.com      SiFive
 suse.com        SUSE
 suse.de         SUSE
+syrmia.com      SYRMIA
 ventanamicro.com Ventana Micro Systems
 virtuozzo.com   Virtuozzo
 vrull.eu        VRULL